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Articles | Volume 15, issue 7
Articles | Volume 15, issue 7
https://doi.org/10.5194/bg-15-1969-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-15-1969-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 15, issue 7
Research article
 | 
04 Apr 2018
Research article |  | 04 Apr 2018

Substrate potential of last interglacial to Holocene permafrost organic matter for future microbial greenhouse gas production

Janina G. Stapel, Georg Schwamborn, Lutz Schirrmeister, Brian Horsfield, and Kai Mangelsdorf

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Short summary
Climate warming in the Arctic results in thawing of permafrost deposits. This promotes the accessibility of freeze-locked old organic matter (OM) accumulated during the past. Characterizing OM of different depositional ages, we were able to show that OM from last glacial Yedoma deposits possess the highest potential to provide organic substrates such as acetate for microbial greenhouse gas production and therefore to accelerate the carbon–climate feedback cycle during ongoing global warming.
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